Wiee drawing machine



G' 4 Sheets-Sheet 1.

WIRE DRAWING MACHINE. ,769. Patented May 31, 1898.

(NO Model.)

`im ATTORNEY llll |L Imm WITNESSES:

(No Model.) 4 Sheets-Sheet 2.

G. B. LAMB. WIRE DRAWING MACHINE.

No. 604,769. Patented May 3l, 1898.

lailsiihhlii lNVENTOH Ihr.

AIIGIINEY` (No Model.) 4 Sheets-Sheet 3.

' G. B. LAMB.

WIRE DRAWING MACHINE.

N0.'604,769. Patented May 31,l898'.

(No Model.) 4 Sheets- Sheet 4.

G. B. LAMB.

WIRE DRAWING MACHINE. No. 604,769. Patented May 31, 1898.

721) ATTORNIEY Unirse Simfree Barnum FFICE.

GEORGE B. LAMB, OF VATERBURY, CONNECTICUT, ASSIGNOR TO THE IVATERBURYMACHINE COMPANY, OF SAME PLACE.

WBREWDRAWlNG MACl-HNE.

SPECIFICATION forming part of Letters Patent No. 604,769, dated May 31,1898.

Application filed June 16, 1897. Serial No. 640,964. (No model.)

To all whom t may concern:

Beit known that I, GEORGE B. LAMB, of lfVaterbury, in the county of NewIIaven and State of Connecticut, have invented a new and usefulImprovement in Tire-Drawing Machines, of which the following -is aspeciication.

The present invention relates to machines for drawing wire, andespecially has for its object the provision of means for threading thewire through the several dies and gradually moving of such dies from aninitial position wherein the wire is wound abouta roll and consecutivelythreaded through the several dies while the die-box is moved up to itsnormal position, wherein the respective dies are located opposite theirappropriate rolls. The subject of the present application is animprovement upon the devices shown and described in my application filedApril 14, 1896, and serially numbered 587 ,462.

In the several views of the drawings I have shown a constructionembodying the features of the present invention, in whichvFigure 1 is aplan view of the machine, certain parts being in horizontal section.Fig. 2 is an end elevation, the tank being shown in vertical section.Fig. 3 is an enlarged detail View, in side elevation, of the slidingdie-box. Fig. 4 is an enlarged detail sectional view along line 4 4 ofFig. 1. Fig. 5 is an enlarged sectional view along line 55 of Fig. 1.Fig.

Y 6 is an enlarged detail sectional view of the drawing-in roll, takenon the line 6 6 of Fig. 7, looking in the direction of the arrows. Fig.7 is a detail sectional view taken along line 7 7 of Fig G, looking inthe direction of the arrows. Fig. 8 is an enlarged detailplan View,

partly in section, of the wire-gripping mechanism of the drawing-inroll. Fig. 9 is a side elevation View, and Fig. 10 is an enlarged detailview in section, of the gearing for driving the parts at varying ratesof speed.

Like letters of reference refer to like parts in the several views ofthe drawings.

Referring to the drawings in detail, A represents the base ofthemachine, which is provided with standards Va a', on which are supportedthe various parts of the machine. A scrlcs of drawing-rolls B', B2, B3,B4, B5, and

B6 are mounted on a shaft B, these drawingrolls being of the samediameter, but driven at varying rates of speed. The drawing-roll B isdirectly secured to the shaft B, while the drawing-rolls B2, B3, B4, B5,and B6 are mounted on sleeves rotating one within the otherV and eachprovided with a driving gear-wheel. Each of the sleeves is provided with'a gearwheel, by means of which it is driven, these respectivegear-wheels being designated C', C2, C3, C4, C5, and C6. Thesegear-wheels areA of varying diameters and mesh with correspendinggear-wheels D', D2, D3, D4, D5, and D6, mounted on shaft D, the relativeproportions of these intermeshing gear-wheels being such as to develop agradually-increasing rate of revolution of the drawing-rolls B', B2, B3,B4, B5, and B6.

F designates a frame carrying the die-box F', in which are supported theseveral dies. Projecting from one side of the frame F are studs f, inwhich is journaled a shaft f', on which are mounted grooved rollers oridlers f2, about which the wire passes from one dieboX to the :nextsucceeding. The frame F slides upon astationary frame G, being movedlongitudinally on the frame G `by means of a handlwheel G', providedwith a threaded rod G2, screwing into the hollow frame G. For thepurpose of lessening the friction between the frame F and thesupporting-frame G roller-bearings are provided, which bearings consistof a spindle g' and an annular ring g2. Between the spindle and rin'gare placed antifriction-rolls g3.

In the operation of the machine the side strain upon the movable frame Fis considerable, and the use of roller-bearings permits of an easymanipulation of the frame F in the operation of threading the dies. Uponthe under side of the frame G is secured an larm H, provided at itsprojecting end with a pawl h, which is held in position bya spring h',provided with a notch engaginga projection formed on the pawl. Normallythe pawl bears against the wire passing around the drawing-rolls,preventing it from becoming unwound when the end of the wire is releasedfrom the gripping-tongs or in case of the breaking of the wire. Achannelf 3 surrounds the IOO is the drawing-in roll I.

3o and a milled bhead j7.

die-box and is for the purpose of conducting the Iiuid pumped into thedie-box back again into the main fluid-tank.

Loosely mounted on the end of the shaftB This roll acts in conjunctionwith the roll B to draw the Wire through the dies and around lthedrawingrolls. For this purpose the roll B is provided withan annularcut-out portion b3, the inner xo face of the cut-out portion beingprovided with a series of notches b4 to constitute a ratchet. In arecess I on the face of the drawing-roll I opposed to the face of thecontiguous roll B is mounted a bell-crank lever i 5 I2, having a stud I3projecting through the face of the roll and Working in the slot I4,formed therein. The other end of the bellcrank lever is provided with astud I5, working in the annular groove b3, formed in the 2o face of theroll B, being normally held out of engagement with the notches b4 bymeans of the spring I6. The drawing-in roll I is provided Withwire-gripping tongs J. The jaws of the tongs consist of two pieces j,sliding in a wayj, the sides of which converge. The

inner ends of the jaws j are provided with lugs jz, engaging a cut-outportion formed in a stud js, sliding in a slot jt The stud js isprovided with a ange `7'5, sliding in Ways j, For the purpose of guidingthe wire onto the drawing-rolls the drawing-in roll I is provided with aspiral flange I7.

K designates the wire-block, whichnisr mounted on shaft-7c, upon whichis secured beveled gear-wheel 7c', meshing with beveled gear-wheel k2 onshaft o.

Situated under the drawing-rolls, the dieboX, and the idler-rolls is atank L, contain- 4o ing the liuid which is supplied to the die-box.

For this purpose the fluid is pumped out of the tank into the die-box,passing therethrough and being discharged therefrom into the channel f3surrounding it, which channel is inclined so as to conduct the fluidback into the tank L. L designates the finishing diebox, which is placedon the opposite side of `the rollers to the die-box F, the wire passingfrom this die-box directly to the wire-block K.

5o When the end of the wire is first secured to the block K, it isdesired that the machine shall run at a much slower rate of speed thanits normal rate, and for the purpose of varying the speed of rotation ofthe several partsv 5 5 the following construction is availed of: On

the shaft b2 slides a clutch M, adapted to engage the gear b', which hasmade integralV with it a sleeve m. 'On this sleeve is looselyl mounted algear-wheel m and a clutch M, 6o the clutch M being feathered on thesleeve fm. On the shaft b2 is keyed a gear-Wheel b5, meshing withgear-wheel h4 on shaft los, on

which shaft is also keyed a gear-wheel m8.` yTheclutches are operated sothat when the, ,65 clutch M' is in engagement the clutch M is. out ofengagement, and vice versa, the move-. ment of the clutches beingaccomplished by' `drawing-in roll.

`tension on the wire is constant.

a hand-lever N, to which is engaged a link n, which operates the clutch-yokes n n2. When the wire is Iirst attached to the block and it isdesired to run the machine more slowly, t-he parts are in the positionshown in Fig. 10, the clutch M being in engagement with the gear-wheelm. In this position the shaft b2, rotating at its normal rate, drivesthe gearwheel b5, meshing with gear-Wheel 7a4, driving the shaft 7c3, onwhich is mounted the gearwheel m3, which meshes with the gear-wheel m',this rotating the sleeve m and the gearwheel b by means of the clutchM', the gearwheel b meshing with the gear-wheel O on' shaft o, whichcarries the beveled gear 702, meshing with the beveled gear k' to drivethe block K. When it is desired to operate the machine at full speed,the clutch M is thrown into engagement and the clutch M is thrown out ofengagement. The shaft b2 then drives the gear-Wheel b', which thendirectly drives the block K by meshing with the gear- `wheel O.

The operation of the device is as follows: The sliding frame F, carryingthe die-box, is drawn out to its furthermost position, so .that theopening in the die-box for the rst of the series of dies comes oppositethe drawing-in roll I. The end of the rod or coarse wire to be reducedafter having been properly tapered is passed through the largest die andplaced between the j aws j of the gripping-tongs. The jaws of the tongsare then caused to grip the wire tightly by sliding them by means of themilled head j 7 along the converging ways, so

that the jaws come together and grip tightly the rod placed betweenthem. The machine is then set in operation and the bell-crank lever I2is rocked, so that the projecting portion I5 engages one of the teeth ofthe ratchet b4, formed on the inner face of the roll B'. By this meansthe drawing-in roll and the roll B' move together, and the wire is drawnthrough the die-box and is guided inward toward the rolls by the'spiralflange I7. The

sliding frame F is then moved up, so as toy bring the opening for thenext die'opposite The Wire is then passed underneath the die-box andover its appropriate grooved roller or idler back through the die and isplaced in the grip of the tongs again and the operation repeated. Theseoperations are repeated. until all the dies are filled, the last beingplaced in the finishing die-box and the end of the wire secured to theblock K. It will be seen that by this arrangement each die is handledbut once and that it remains in its place throughout the Stringing up.As the rolls are turning while the frame F is advanced, but little poweris required to run the coils from roll to roll, and the graduation inspeed being constant throughout the The wire is prevented from uncoilingwhen the end is released from the tongs by the pawl h bearing againstit. When the roll is turning, the wire passes over this pawl; but onreleasing IIO the jaws the tendency of the coil is to spread out to alarger diameter, which is prevented by the pawl h.

What I claim as new is- 1. The combination of a series of drawingrolls,means for operating the same, a die for each of said rolls and a slidingdie-box carrying said dies, for moving the dies in front of the rolls,substantially as specified.

2. The combination of a series of .drawingrolls, a drawing-in roll, adie for each of said rolls and a sliding die-box carrying said dieswhereby each die may be successively moved in front ofthe drawing-inroll, and then in front of its drawing-roll, substantially as specied.

3. The combination of a series of drawingrolls, a drawing-in ,device, adie for each of said rolls, a frame carrying the series of dies, andmeans for moving the frame 'longitudinally relatively to thedrawing-rolls, substantially as specified.

4. The combination of a series of drawingrolls, a frame carrying aseries of dies and a corresponding series of idler-rolls, and means formoving said frame longitudinally relatively to the drawing-rolls,substantially as specified.

5. The combination of a series of drawingrolls, a drawing-inroll, meansfor engaging and disengaging the drawing-in roll with one of the seriesof drawing-rolls, a die-box, and means for moving the die-boxlongitudinally relatively to the series of drawing-rolls, substantiallyas specified.-

6. In a Wire-drawing machine, the combination of a series ofdrawing-rolls of the same diameter,means for rotating the drawing-rollsat varying. rates of speed, a wire-block having means for driving it,and mechanism in engagement with the driving means of the rolls andblock for varying the speed of the block to correspond with the rate ofspeed of the drawing-rolls, substantially as specified.

7. In a wire-drawing machine, the combination of a series ofdrawing-rolls of the same diameter, means for rotating the drawing-rollsat varying rates of. speed, a wire-block having means for driving it,and means for varying the rates of speed of the drawing-rolls and theblock, said means comprising a drivingshaft, 'a sleeve on said shaftcarrying a fast gear which drives the gearing of the drawingrolls andblock, and a loose gear, each of vsaid gears being provided with aclutch, a sliding clutch on said shaft, a sliding clutch on said sleeve,a gear fast on said shaft, a second shaft having gears fast thereon, oneof which is in engagement with the fast gear on the driving-shaft, andthe other in engagement with the loose gear on the sleeve, and means foralternately' operating the sliding clutches,

substantially as specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

GEORGE 4B. LAMB. Witnesses:

THOMAS C. LANE, WM. E. FULTON.

